some have had luck selling or just swapping these here on the site but in general, it depends on the condition of the note and the market. some people collect them, but unless it is in at least uncirculated condition, there may not be many takers. it certainly is collectable but as is the case with many collectables... its value may not be realized for many years (at least with this one... it will always be worth $20!). a good indication of the market is on ebay... you can check what people are trying to sell them for and if you search completed auctions, you can see if any have sold and at what price. i hope this helps!